Improvement in shingling-brackets



T M. MQGLELLAND 82; J. A. GRANT. Shmglmg Bracket No. 201,691. PatentedMarch 26,1878.

III. I.

INVENTOR 775% WITNESSES ATTORNEYS.

UNITED STATES PATENT OFFICE.

THOMAS M. MGGLELLAND AND JAMES A. GRANT, OF MOUNT PLEASANT, IOWA.

IMPROVEMENT IN SHlNGLlNG-BRACKETS.

Specification forming part of Letters Patent No. 201,691, dated March26, 1878 application filed December 28, 1877.

To all whom it may concern Be it known that we, THOMAS M. McGLEL- LANDand J AMESA. GRANT, of Mount Pleasant, in thecounty of Henry and Stateof Iowa, have invented a new and Improved Bracket for Scaffolding, ofwhich the following is a specification:

Figure 1 is a side elevation, partly in section, of our improvedbracket. Fig. 2 is a plan view.

Similar letters of reference indicate corre sponding parts.

The object of our invention is to provide an adjustable bracket forsupporting scaffolding on inclined roofs; and it consists in a bedpiecehaving a chisel-shaped end for entering between the shingles, and in alever pivoted to an arm projecting from the bed-piece, and arranged toclamp the butt of a shingle between it and the chisel-shaped end of thebedpiece. The said lever is moved by a bar that is actuated by a screw.The scafiold is supported by the arm, and is kept from slipping by theprojecting end of the bar that moves the lever.

Referring tothe drawing, A is the bed-piece, to which all of the otherparts of the device are attached. This bed is slightly angled, so thatthe chisel-shaped end a conforms to the inclination of the upper surfaceof the shingle, while the part b conforms to the inclination of theroof.

The under surface of the part A is recessed, to insure a firm bearing ofthe bedpiece on the roof. A curved standard, 0, projects from thebed-piece A, for supporting the lever B, which is mortised and placed onthe standard, and pivoted on a pin, 0, that passes through both leverand standard.

The short arm of the lever B is curved downward, sharpened, andserrated, and the longer arm of the said lever is notched or forked, toreceive the bar h, which is pivoted on the pin *5, and extends bothabove and below the lever B. The lower end of the said bar is notched,and placed on a rib, is, formed on the bed-piece A, and its end isbeveled, so that the screw Z presses squarely against it.

When the device is in use the scaffolding n is placed on the lever B,between the upper end of the curved standard 0 and the upper end of the,bar h.

The device is used by inserting the chiselshaped end a between twocourses of shingles, with the shoulder 0 on the bed-piece against thebutt of the shingle. The screw lis then turned so as tothrow the bar hforward and move the lever B, so that its serrated edge clamps the buttof the shingle firmly against chisel-shaped part a.

As many of the brackets as may be required are fastened in the course ofshin gles,when the scaffolding n is put in place. I

Two or more holes are made in the bar it and curved standard 0, so thatthe inclination of the lever B may be changed to suit the pitch of theroof.

Having thus described our invention, we claim as new and desire tosecure by Letters Patent- The combination of the angled bed-piece A,having the chisel-shaped end a, the curved and serrated lever B, the barh, and adjustingscrew Z, substantially as shown and described.

THOMAS M. MCGLELLAND. JAMES A. GRANT.

Witnesses:

JAMES BIGELOW, B. F. MILLSPAUGH.

